Applies to vehicles equipped with a 4.2L engine and federal high altitude emission control system
Jeep technical service bulletin RCL647 for 1990 Jeep Wrangler.
- Bulletin number
- RCL647
- Component
- Engine and engine cooling: exhaust system: emission control: gas recirculation valve (EGR valve)
- Summary
- Applies to vehicles equipped with a 4.2l engine and federal high altitude emission control system. Fuel vapors may cause deterioration of the pcv harness assembly. The pcv harness assembly must be replaced and the engine idle speeds must be reset.
Owners of these vehicles have filed 8 complaints in the engine category.
Vehicles covered
- Jeep Wrangler 1990 1990
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